The Belloy Formation is a stratigraphical unit of Permian age in the Western Canadian Sedimentary Basin.

[2] The Belloy Formation is composed of mixed carbonate-siliciclastic sequences of cherty dolomite and sandstone, glauconitic and quartz sandstones, phosphorite, siltstones and conglomerate with phosphatic chert pebbles.

[3] The Belloy Formation reaches a maximum thickness of 274 metres (900 ft) in the Canadian Rockies foothills south of Fort St. John.

It thins out towards the east and occurs in the sub-surface throughout the Peace River Country.

This article about a specific stratigraphic formation in Canada is a stub.